400 V. Empty box for nominal cross-section 2.5 mm2, with 2 cable entries and 2 break-out cable entries. Installation option for control devices with single-hole fastening diameter 22.5 mm, e.g. Schneider Electric Harmony xB4/xB5 etc., up to 50 mm installation depth. Scope of delivery: Complete device with 4 double entries. Color: green.